A New Answer to an Old Question

How do you keep zombie pigmen from spawning on/near your rails in the Nether? It's been an issue since the first Minecrafter laid track in hell.

The typical and certainly cost-efficient answer is to place glass, slabs, or stairs directly above the track itself. While in a minecart, players can pass through these blocks without taking any damage or suffocating. It does feel a bit cheesy using this method, and there are a few drawbacks (namely slopes and access to the area without a cart handy).

Konceptum1 decided to try his hand at answering this with a more high-tech approach.

While not the most resource friendly, it does seem to be an interesting take on the subject. It would be a fun way to impress people with your redstone skills!